diff --git a/example/ivy/tools.go b/example/ivy/tools.go
index ab067c2..de6105c 100644
--- a/example/ivy/tools.go
+++ b/example/ivy/tools.go
@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build ignore
+//go:build tools
 
 package dummy